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Pedimentation versus debris-flow origin of plateau-side desert terraces in southern Utah Pedimentation versus debris-flow origin of plateau-side desert terraces in southern Utah

Plateau-side terraces in arid areas around the world are commonly described as pediment remnants, although, in many cases, they may have been formed by debris-flow deposition. Pediments do exist in the area of the Aquarius and Kaiparowits Plateaus of southern Utah; however, many alluvial terraces that were classified by previous workers as pediments are actually formed of thick deposits...
Authors
V. S. Williams

Noise analysis of the seismic system employed in the northern and southern California seismic nets Noise analysis of the seismic system employed in the northern and southern California seismic nets

The seismic networks have been designed and operated to support recording on Develocorders (less than 40db dynamic range) and analog magnetic tape (about 50 db dynamic range). The principal analysis of the records has been based on Develocorder films; and background earth noise levels have been adjusted to be about 1 to 2 mm p-p on the film readers. Since the traces are separated by only...
Authors
J. P. Eaton

Spring sapping on the lower continental slope, offshore New Jersey Spring sapping on the lower continental slope, offshore New Jersey

Undersea discharge of ground water during periods of lower sea level may have eroded valleys on part of the lower continental slope, offshore New Jersey. Steep-headed basins, cliffed and terraced walls, and irregular courses of these valleys may have been produced by sapping of exposed near-horizontal Tertiary strata. Joints in Eocene calcareous rocks would have localized ground-water...
Authors
James M. Robb
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